The paper introduces the test of welding residual stress in weldment of constructional machinery and its distribution law.
通过测试工程机械结构件焊接残余应力，分析其分布特点；
Quality and constructional arrangement to be made to ensure easy maintenance as far as practically possible for all machinery and equipment.
质量和结构布置应确保简洁易行以及所有机械和设备的日后保养工作的可行性。
Structural steels can be subdivided into constructional steel and machinery steel.
结构钢还可分为建筑用钢和机械用钢。
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